Is CVE-2024-39274 actively exploited?

CVE-2024-39274 has no public evidence of in-the-wild exploitation as of 2024-08-23.

What is the CVSS score for CVE-2024-39274?

CVE-2024-39274 has a CVSS score of 8.7 (HIGH severity). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N.

How do I patch CVE-2024-39274?

Patch guidance is available from mattermost security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2024-39274.

Fix CVE-2024-39274 - HIGH mattermost mattermost

Q: Which products are affected by CVE-2024-39274?

4 products: mattermost mattermost, mattermost mattermost, mattermost mattermost, mattermost mattermost.

Description

Mattermost versions 9.9.x <= 9.9.0, 9.5.x <= 9.5.6, 9.7.x <= 9.7.5 and 9.8.x <= 9.8.1 fail to properly validate that the channel that comes from the sync message is a shared channel, when shared channels are enabled, which allows a malicious remote to add users to arbitrary teams and channels

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N
Attack Vector: network
Complexity: low
Privileges: high
User Action: none
Scope: changed
Confidentiality: high
Integrity: high
Availability: none
Weaknesses: CWE-284NVD-CWE-noinfo

Metadata

Primary Vendor: MATTERMOST
Published: 8/1/2024
Last Modified: 8/23/2024
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

mattermost : mattermostmattermost : mattermostmattermost : mattermostmattermost : mattermost

Remediation Guidance

Executive Summary

Cite this page

CVE-2024-39274. CVEDatabase.com. Retrieved 1 May 2026. https://cvedatabase.com/cve/CVE-2024-39274

View on NIST NVD

CVE-2024-39274 vulnerability